基于Creo的红薯移栽机凸轮机构设计与分析  

Design and analysis of cam mechanism of sweet potato transplanter based on Creo Liufang

作　　者：申屠留芳 刘涵 吴旋 孙星钊 张文毅 Liufang Shentu;Han Liu;Xuan Wu;Xingzhao Sun;Wenyi Zhang(College of mechanical engineering,Jiangsu Ocean University,Lianyungang,222005,China;Lianyungang Tianyuan Agricultural Machinery Research Institute,Lianyungang,222000,China;Nanjing Institute of Agricultural MechanizationInstitute,Ministry of Agriculture and Rural Affairs,Nanjing,210014,China)

机构地区：[1]江苏海洋大学机械工程学院,江苏连云港222005 [2]连云港市元天农机研究所,江苏连云港222000 [3]农业农村部南京农业机械化研究所,南京市210014

出　　处：《智能化农业装备学报（中英文）》2020年第2期11-18,共8页Journal of Intelligent Agricultural Mechanization

基　　金：国家现代农业产业技术体系建设专项(CARS-10-B17);江苏省研究生科研与实践创新计划(KYCX20_2916);江苏省研究生教育教学改革课题(JGLX19_156)。

摘　　要：根据红薯移栽机栽植的农艺要求,利用连杆-凸轮组合机构的运动规律,模拟出夹持手指的运动轨迹,进而设计圆柱凸轮机构的轮廓曲线。对正弦加速度运动规律和五次多项式运动规律的圆柱凸轮机构在Creo软件中建立三维模型,并进行运动学仿真,应用Adams软件对仿真结果进行分析。分析表明采用正弦加速度运动规律的凸轮滚子质心处加速度的最大值相较于五次多项式运动规律的减小6.58 m/s^(2),最大接触力减小32.778 N,设备振动与冲击也相对减小,为实现红薯移栽的机械化提供理论基础。In this paper,according to the agronomic requirements of sweet potato transplanter,using the motion law of connecting rod cam combination mechanism,the movement track of clamping finger is simulated,and then the contour curve of cylindrical cam mechanism is designed.The three-dimensional model of cylindrical cam mechanism with sinusoidal acceleration motion law and quintic polynomial motion law is established in Creo software,and kinematics simulation is carried out.The simulation results are analyzed by ADAMS software.The analysis shows that the maximum acceleration at the center of mass of cam roller is reduced by 0.352 meters per square second,the maximum contact force is reduced by 32.7783N,and the vibration and impact of the equipment are also relatively reduced,which provides a theoretical basis for the mechanization of sweet potato transplanting.

关 键 词：红薯栽植机构 圆柱凸轮机构 栽植轨迹 运动仿真 

分 类 号：S223.93[农业科学—农业机械化工程]